From mboxrd@z Thu Jan  1 00:00:00 1970
From: dave@horsfall.org (Dave Horsfall)
Date: Wed, 18 Oct 2017 13:46:07 +1100 (EST)
Subject: UNIX version 2*pi
In-Reply-To: <07b401d34775$14e230b0$3ea69210$@ronnatalie.com>
References: <201710161158.v9GBweD4005539@coolidge.cs.Dartmouth.EDU>
 <CAC20D2PBkRgoyrmQ+wDpqfZ7kXCUqNWdJgm08EO2djmwFp4Fng@mail.gmail.com>
 <201710161639.v9GGdtTg014500@darkstar.fourwinds.com>
 <20171016191640.mqqbf7cp6yfyb6se@matica.foolinux.mooo.com>
 <201710161928.v9GJSB8Y028111@darkstar.fourwinds.com>
 <20171017011554.76ffxpcotcxlxeeo@matica.foolinux.mooo.com>
 <81DB1DA1-D194-4A5B-9253-D8EE6E85CC26@gmail.com>
 <alpine.BSF.2.21.1710171703250.30357@aneurin.horsfall.org>
 <07b401d34775$14e230b0$3ea69210$@ronnatalie.com>
Message-ID: <alpine.BSF.2.21.1710181344050.30357@aneurin.horsfall.org>

On Tue, 17 Oct 2017, Ron Natalie wrote:

> The BRL/JHU kernel was based on V6.    It had a kludge to allow more that
> 256 users but eventually, we widened the UID/GID to 16 bits each.   We then
> added a the ability to mount either V6 or V7 file systems (we had a lot of
> removable V6 FS media).

We dropped the GID (nobody used them) and glued it onto the UID, thus 
making it 16-bit.

-- 
Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."